Chalkboard eraser with chalk dust collecting bin

Abstract

The invention discloses a chalkboard eraser with a chalk dust collecting bin. One or more strip-shaped erasing bar is arranged on the outer wall of a base plate of a casing; the casing is hollow, and a plurality of air suction holes communicating with inner holes of the casing are formed in the base plate around the erasing bars; a cylindrical hollow equipment bin is arranged in the casing; a power wheel is driven by using a friction force generated by left-right movement of the chalkboard eraser on a backboard when the blackboard is cleaned to rotate, then the power wheel transmits power to a flywheel, and the flywheel drives fan blades to rotate, thereby realizing a function of sucking dust; and after air current blown from the inside of the casing is deflected by a skirt hem on the edge of the base plate, an air current curtain is formed around the chalkboard eraser, so that the condition that chalk dust flies outwards is prevented.

Description

technical field [0001] The invention relates to a chalk eraser with a chalk bin used by teachers in the teaching process, which belongs to the optimization technology of the chalk eraser. Background technique [0002] Teachers often need to write with chalk on the blackboard during the teaching process. After writing, they need to use a chalk eraser to erase the chalk on the blackboard. During the process of wiping the blackboard, the chalk dust from the chalk eraser often flies around and pollutes the surrounding area. environment, increase the difficulty of cleaning, and even if the person wiping the blackboard tries to hold his breath to prevent from inhaling chalk dust, he will still inevitably inhale some chalk dust, which will give health risks. [0003] Therefore, need to look for a kind of chalk eraser that can avoid chalk dust to fly everywhere with the band collection powder bin. Contents of the invention [0004] The object of the present invention is to provid...

AI Technical Summary

Problems solved by technology

[0002] Teachers often need to write with chalk on the blackboard during the teaching process. After writing, they need to use a chalk eraser to erase the chalk on the blackboard. During the process of wiping the blackboard, the chalk dust from the chalk eraser often flies around and pollutes the surrounding area. environment, increasing the difficulty of cleaning, and even if the person wiping the blackboard tries to hold his breath to prevent inhalation of chalk dust during the wiping process, he will still inevitably inhale some chalk dust, causing health risks

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